Standard Time = GMT-1
Summer Time = GMT+0
Clocks on Daylight Saving /Summer Time
until:01:00 GMT on last Sunday in October
Azores Tourism website
The Azores are in the Azores Time Zone. The Azores Time Zone is Greenwich Mean Time -1 (GMT-1 ).
Like most states in Europe, Summer (Daylight-Saving) Time is observed in Azores, where the time is shifted forward by 1 hour to Greenwich Mean Time (GMT).
After the Summer months the time is shifted back by 1 hour to Azores Time (GMT-1).